Formal:
* Swagatam: This is the most common and formal way to say "welcome" in Telugu.
* Swasagatam: This is another formal option, slightly more elaborate than "Swagatam."
Informal:
* Vaarni: This is a more casual and friendly way to say "welcome."
* Saagnam: This is another informal option, often used in friendly settings.
Other options:
* Naa Pranamaalu: This literally translates to "my greetings" and is a more polite way to welcome someone.
* Nannu gurthunchukondi: This translates to "Remember me" and is a less common but still valid way to welcome someone you know.
The best choice depends on the specific situation and your relationship with the person you are welcoming.